Houstonians, you really must work on your walking

I always hesitate to criticize Houstonians, even ever so gently.
But I’m about to, because a certain local behavior has gotten worse.
My dear Houstonians, you don’t know how to walk down the street. Seriously, everyone whines about the driving, which is only intermittently terrible (because only intermittently can one exceed 30 mph.)
I’m not the only one who has noticed this. A colleague of mine once bemoaned the fact that nobody downtown ever walks “as if they were trying to get anywhere.”
I can excuse some of this aimless walking during the summer, when not being covered in sweat is a laudable goal. But this time of year? No excuse.
I’ve also multiple times witnessed a group of street-crossers blinking uncomprehendingly at the Walk sign, allowing it to go through a full cycle before they decide to move. Folks, your neighbors do rocket science. Your other neighbors do brain surgery. Surely you can master the crosswalk.
A digression: In 2015, how can people not know how a revolving door works? I’ve seen a young woman completely flummoxed by one. I’ve seen a man in a hardhat drag the door, screeching, backward rather than forward. Just the other day I overheard a well-dressed woman say, “Oh, this thing scares me.”
It’s a door. It’s not new technology.
But speaking of newish tech, phones have made the street-walking problem even worse. Now the few people who might have had a clue are staring at their phones, doing slow baby-steps. Between them and the natural slow-walkers, there’s no way to traverse a block of downtown at midday.
I know there are bigger problems. But this is one we can solve, isn’t it?